[BUG] UI text stays in the old language after a language switch #2185

Describe the bug
After you change the language in Settings, some parts of the Zoo Code do not change. They continue to show the old language until you reload the webview.

To Reproduce

1. Open Zoo Code. The UI language is English.
2. Open Settings. Go to the "Language" section.
3. Select a different language, for example "Español". Click "Save".
4. Look to the labels. Text is still in English.
5. Go back to the chat view. Some text is still in English ("Zoo is a whole AI dev team in your editor", "Check our docs to get started", "Recent tasks", etc.), some text is in Spanish now ("Modos personalizables" and "Trae tu propio modelo", etc.).
6. Let's reload the webview. Open some task from the Recent task and go back (click "New Task" in the header).
7. Look at the labels. Now all text is in Spanish ("Zoo Code es todo un equipo de desarrollo de IA en tu editor", "Consulta nuestra documentación para saber más", "Tareas" from p. 5). That's the workaround to make the UI language in the webview consistent.
8. If you close VS Code, open it again and click to the Zoo Code extension, you can see the inconsistency from p. 5: some text in English, some text in Spanish.

Expected behavior
All UI text changes to the new language immediately after you click "Save". You do not need to reload the webview.

Screenshots

Video

What version of zoo are you running
3.90.0

Additional context
I see related PRs #419 and #475 tried to fix this problem but both were closed.